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Finding the Fourth Proportional to 7,901,408.88, 11,852,026.92 and 1,917,776.88

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Solution

The fourth proportional to 7,901,408.88, 11,852,026.92 and 1,917,776.88 is: 2,876,644.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901,408.88 : 11,852,026.92 = 1,917,776.88 : x
  2. Step 2: Convert to fraction form
    7,901,408.88/11,852,026.92 = 1,917,776.88/x
  3. Step 3: Cross multiply
    7,901,408.88x = 11,852,026.92 × 1,917,776.88
  4. Step 4: Simplify right side
    7,901,408.88x = 22,729,543,208,313.61
  5. Step 5: Solve for x
    x = 22,729,543,208,313.61/7,901,408.88
  6. Step 6: Final answer
    x = 2,876,644.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.